Equilateral

adj, noun

adj, noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A side exactly corresponding, or equal, to others.
  2. 2
    a figure whose sides are all equal wordnet
  3. 3
    A figure having all its sides equal.
Adjective
  1. 1
    Having all the sides equal. not-comparable

    "Kissinger had wanted to keep an “equilateral” distance between the US, USSR and China. Under Carter, they became de facto partners."

  2. 2
    Having all the faces equal. not-comparable
  3. 3
    Having the two sides equal, as a surface divisible by a longitudinal median line into two halves of the same form. not-comparable
  4. 4
    Having all the convolutions of the shell in one plane, chiefly of foraminifers. not-comparable
Adjective
  1. 1
    having all sides or faces equal wordnet

Synonyms

All synonyms
equalbalancedcoequalcoordinateequiangularequidimensional

Example

More examples

"In an equilateral triangle with vertices A, B and C, the distance from A to B is the same distance as from B to C, or from C to A."

Etymology

From equi- + lateral.

Related phrases

equilateral archequilateral crossequilateral hyperbolaequilateral triangleequilateral triangleregular polygon

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.